According to Teddy Goff, the nearly 34 million Facebook users who “like” Barack Obama on the social networking sites are friends with 98% of the U.S. Facebook population, making it an effective tool to reach out to younger voters.

And,

Goff explained that more than 90% of the Obama e-mail list voted in 2008 — the challenge in 2012 wasn’t as much to keep them on board, but to reach out to more people.

Aside from fund-raising, Goff said the digital operation wasn’t about getting supporters on their lists to vote — it was about getting their friends to vote for Obama.